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May Weather in Port Byron, United States

Last updated: June 24, 2025

In Port Byron, United States, the average temperature in May hovers around 15°C (59°F), creating a mild climate for residents and visitors alike. However, temperatures can vary significantly, with minimums dipping to -1°C (30°F) and maximums soaring up to 34°C (93°F). Prepare for a wet month, as 124 mm (4.9 in) of precipitation falls over approximately 16 days, contributing to an average humidity level of 82%.

May Temperature in Port Byron

In May in Port Byron, the average temperature is 15°C (59°F). Maximums can reach 34°C (93°F), while minimums can drop as low as -1°C (30°F). Be prepared for a wide range of temperatures while traveling during this time.

May Weather in Port Byron: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Port Byron, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Port Byron, May typically has an average temperature of 15°C (59°F), with highs reaching up to 34°C (93°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec262835465867737164543932
Data source: Temperature data for Port Byron generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Port Byron

In Port Byron in May, the precipitation amount is 124 mm (4.9 in) occurring over a period of 16 days.

May Precipitation Trends in Port Byron

The chart displays monthly precipitation patterns in Port Byron, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Port Byron, May typically receives around 124 mm (4.9 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec9494871221249417311790162103106
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Port Byron

In Port Byron in May, humidity is 82%. With an average temperature of 15°C (59°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel sticky and uncomfortable for travelers.

May Average Humidity in Port Byron

This chart illustrates the average monthly humidity levels in Port Byron, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Port Byron is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%87%88%82%79%78%76%78%84%89%86%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Port Byron

In Port Byron in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Port Byron.

Maximum UV Index Levels in Port Byron for May

The chart shows the monthly maximum UV Index (UVI) for Port Byron in May, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In May, the maximum UV index in Port Byron typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3468910997632
Data source: Port Byron May UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How May Weather in Port Byron Compares to Other Months

Weather in Port Byron varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Port Byron, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Port Byron, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)94 mm (3.7 inches)90%moderate
February Weather-2°C (28°F)94 mm (3.7 inches)90%moderate
March Weather1°C (35°F)86 mm (3.4 inches)87%high
April Weather8°C (46°F)122 mm (4.8 inches)88%very high
May Weather15°C (59°F)124 mm (4.9 inches)82%very high
June Weather20°C (68°F)93 mm (3.7 inches)79%very high
July Weather23°C (73°F)173 mm (6.8 inches)78%very high
August Weather22°C (71°F)117 mm (4.6 inches)76%very high
September Weather18°C (64°F)90 mm (3.5 inches)78%high
October Weather12°C (54°F)162 mm (6.4 inches)84%high
November Weather4°C (40°F)103 mm (4.1 inches)89%moderate
December Weather0°C (32°F)106 mm (4.2 inches)86%low

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